Flaxseed and Fish Both Have Omega-3s. Here’s How They Differ.
Health & Nutrition
Omega-3 describes a group of fats. Flaxseed and some plant oils supply ALA. Fish and other seafood are sources of EPA and DHA. The NIH explains that these are distinct forms, so an omega-3 claim on a package doesn’t tell you which form it supplies.
When comparing foods, read the ingredient list and any details about the type of omega-3. Think about the food as part of your meal, including how you’ll prepare and serve it.
Ask a healthcare professional about supplements if you have specific medical needs, take medicines or are pregnant. General information about food sources isn’t a dosing guide.
Source
NIH Office of Dietary Supplements: Omega-3 Fatty Acids
